ABYC Electrical 2- Questions With Comprehensive
Solutions
ABYC standard ________ applies to inverters
A. E-2
B. A-27
C. A-28
D. A - 31 Correct Answer - D
A true RMS voltmeter is required to accuralty check output voltage
from a(n):
A. non-sinusoidal output inverter
B. Isolation transformer
C. Inverter DC input
D. Galvanic isolator Correct Answer - A
An AC voltmeter is required at the panel if the boat is equipped with:
A. A DC windlass
B. An AC- powered water heater
C. An inverter
D. AC- powered reading lamps Correct Answer - C
All of the following could cause a conductor to overheat except.
A. Undersized conductor
B. Excessive Amperage
C. Insulation temp rating too low
D. Corroded connector Correct Answer - C
,Tech A says that AC and DC are able to run together down the same
conductor. Tech B says that this is technically impossible which tech
is correct?
A. Tech A
B. Tech B
C. Both techs
D. Neither tech Correct Answer - A
To check for charger output to the battery de-enegize charger check
batter open - circuit voltage re-energize the charger and check for a
voltage ________V DC or more Conductance tester
A. Rise of 14
B. Drop of 0.5
C. Drop pf 14
D. Rise of 0.5 Correct Answer - D
The tool of choice for testing AC generator winding insulation
integrity is a:
A. TDR
B. Fox and hound
C. Megohmmeter
D. Clamp - type ammeter Correct Answer - C
On a brushless generator a possible cause for low AC voltage output
under load could be:
A. High engin RPM
B. Faulty exciter winding diode rectifier
C. Faulty output circuit breaker
D. Excessively high DC voltage supply Correct Answer - B
, All of the following could cause an overheated electrical connection
except:
A. Conductor with an excessively high insulation temperature rating
B. Loose terminal connection
C. Corroded connection
D. Undersized conductor for the load demand Correct Answer -
A
When trouble shooting AC appliances and equipment for safety
considerations the tech should do all of the following except
A. Use lock out and tag out procedures
B. By-pass over current devices when possible
C. De-enegrgize the circuit whenever possible
D. Not wear jewelry Correct Answer - B
For Charging the battery, the alternator produces alternating
current that must be changed to direct current by the.
A. Solenoid
B. Starter
C. Rectifier
D. Voltage regulator Correct Answer - C
On an inverter that does not provide a true sine wave output, low
voltage troubleshoots must be accomplished using a(n)
_________________ type DVOM
A. Analog
B. Average responding
C. True RMS
D. Oscillating Correct Answer - C
Solutions
ABYC standard ________ applies to inverters
A. E-2
B. A-27
C. A-28
D. A - 31 Correct Answer - D
A true RMS voltmeter is required to accuralty check output voltage
from a(n):
A. non-sinusoidal output inverter
B. Isolation transformer
C. Inverter DC input
D. Galvanic isolator Correct Answer - A
An AC voltmeter is required at the panel if the boat is equipped with:
A. A DC windlass
B. An AC- powered water heater
C. An inverter
D. AC- powered reading lamps Correct Answer - C
All of the following could cause a conductor to overheat except.
A. Undersized conductor
B. Excessive Amperage
C. Insulation temp rating too low
D. Corroded connector Correct Answer - C
,Tech A says that AC and DC are able to run together down the same
conductor. Tech B says that this is technically impossible which tech
is correct?
A. Tech A
B. Tech B
C. Both techs
D. Neither tech Correct Answer - A
To check for charger output to the battery de-enegize charger check
batter open - circuit voltage re-energize the charger and check for a
voltage ________V DC or more Conductance tester
A. Rise of 14
B. Drop of 0.5
C. Drop pf 14
D. Rise of 0.5 Correct Answer - D
The tool of choice for testing AC generator winding insulation
integrity is a:
A. TDR
B. Fox and hound
C. Megohmmeter
D. Clamp - type ammeter Correct Answer - C
On a brushless generator a possible cause for low AC voltage output
under load could be:
A. High engin RPM
B. Faulty exciter winding diode rectifier
C. Faulty output circuit breaker
D. Excessively high DC voltage supply Correct Answer - B
, All of the following could cause an overheated electrical connection
except:
A. Conductor with an excessively high insulation temperature rating
B. Loose terminal connection
C. Corroded connection
D. Undersized conductor for the load demand Correct Answer -
A
When trouble shooting AC appliances and equipment for safety
considerations the tech should do all of the following except
A. Use lock out and tag out procedures
B. By-pass over current devices when possible
C. De-enegrgize the circuit whenever possible
D. Not wear jewelry Correct Answer - B
For Charging the battery, the alternator produces alternating
current that must be changed to direct current by the.
A. Solenoid
B. Starter
C. Rectifier
D. Voltage regulator Correct Answer - C
On an inverter that does not provide a true sine wave output, low
voltage troubleshoots must be accomplished using a(n)
_________________ type DVOM
A. Analog
B. Average responding
C. True RMS
D. Oscillating Correct Answer - C
